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Finding the Fourth Proportional to 922,800.60, 1,384,200.90 and 424,164.60

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Solution

The fourth proportional to 922,800.60, 1,384,200.90 and 424,164.60 is: 636,246.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,800.60 : 1,384,200.90 = 424,164.60 : x
  2. Step 2: Convert to fraction form
    922,800.60/1,384,200.90 = 424,164.60/x
  3. Step 3: Cross multiply
    922,800.60x = 1,384,200.90 × 424,164.60
  4. Step 4: Simplify right side
    922,800.60x = 587,129,021,068.14
  5. Step 5: Solve for x
    x = 587,129,021,068.14/922,800.60
  6. Step 6: Final answer
    x = 636,246.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.